Double chamber cup



FIG. 1 is a left side elevational view of a double chamber cup showing my new design. (A right side elevational view would be a mirror image of FIG. 1);

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a double chamber cup, as shown and described. 